LAMBDA SENSOR BOSCH LSU 4.9 LONG WIRE
Couldn't load pickup availability
Worldwide shipping available
We ship internationally via trusted courier services. Delivery time and cost will be calculated after checkout.
The Bosch LSU 4.9 wideband lambda sensor (part number 258017025) is the go-to solution when you need precise air-fuel ratio readings for serious tuning or motorsport use. This is not your average narrowband O2 sensor — it reads across a broad lambda range (from around 0.65 all the way to free air), giving you accurate data you can actually trust when dialing in your setup.
It runs a monotonic output signal that works perfectly in closed-loop systems, and comes with a built-in trimming resistor for proper calibration. The heater element is integrated, so it warms up fast and stays stable, even under demanding temperature conditions. Works equally well with gasoline, diesel, and ethanol-based fuels like E85.
Thread is standard M18×1.5 — fits most aftermarket bungs. If you're running standalone ECU or logging air-fuel ratios during dyno tuning or track sessions, this sensor is exactly what you want in the exhaust stream.
Order your BOSCH LAMBDA SENSOR 258017025 now — worldwide shipping available (shipping not included)
